https://devzone.nordicsemi.com/f/nordic-q-a/39320/logging-data-on-nrf52840hi, new to ble so forgive me if my question is a little simple. i have a project that for example would require 10 central devices and 3 broadcasters. centrals and broadcasters are all mobile. at a period of roughly every 2 weeks a broadcaster will interacten-USTelligent Community 13Wed, 10 Oct 2018 07:08:37 GMThttps://devzone.nordicsemi.com/thread/152292?ContentTypeID=1Wed, 10 Oct 2018 07:08:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b27bc403-bbec-425c-bca3-be9ac70ea65bAndreasF<p>Hi Jarrod.<br /><br />Let me see that i understood your question, you want 10 central (observer) and 3 peripheral (advertising/broadcaster) devices that are mobile. During a period of two weeks a peripheral device will advertise an I.D and date to a central device in close proximity, which the central device will log.<br /><br />If I understood you question, then this is possible. However, you need to make sure that the central have enough battery to keep the radio running all the time(4-5 months?), so that it can receive advertising packets.<br /><br />When it comes to store the data you should take a look at the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.2.0/lib_fds.html">Experimental: Flash Data Storage library</a> and the <a href="http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.sdk5.v15.2.0/fds_example.html?cp=4_0_0_4_5_">Flash Data Storage Example</a>.</p> <p>Hope this helps.</p> <p>- Andreas</p><div style="clear:both;"></div>